Bohr and Lewis Dot

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many valence electrons does Phosphorus have?

Back

Phosphorus has 5 valence electrons.

Front

What is a Bohr model?

Back

A Bohr model is a diagram that represents an atom with a central nucleus surrounded by electrons in defined orbits.

Front

What element is represented in this Bohr Model? (If the model shows 3 electrons in the first shell and 1 in the second)

Back

Lithium.

Front

Where does the majority of an atom's mass exist?

Back

The majority of an atom's mass exists in the nucleus.

Front

What is a Lewis dot diagram?

Back

A Lewis dot diagram is a representation of an atom that shows its valence electrons as dots around the element's symbol.

Front

Is this a correct dot diagram for fluorine (F)?

Back

Yes, fluorine has 7 valence electrons represented in the dot diagram.

Front

According to the octet rule, how many valence electrons do most elements need?

Back

Most elements need 8 valence electrons according to the octet rule.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of 8 electrons.

Front

What is the atomic number of Lithium?

Back

The atomic number of Lithium is 3.